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Finding the Fourth Proportional to 8,478.34, 12,718.34 and 2,633.38

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Solution

The fourth proportional to 8,478.34, 12,718.34 and 2,633.38 is: 3,950.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.34 : 12,718.34 = 2,633.38 : x
  2. Step 2: Convert to fraction form
    8,478.34/12,718.34 = 2,633.38/x
  3. Step 3: Cross multiply
    8,478.34x = 12,718.34 × 2,633.38
  4. Step 4: Simplify right side
    8,478.34x = 33,492,209.02
  5. Step 5: Solve for x
    x = 33,492,209.02/8,478.34
  6. Step 6: Final answer
    x = 3,950.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.